Honing apparatus



' s lsheets-sheet 11 June 19,-1934. ,1. H. GETTIG {Er 11u:s

HONING -APPARATUS Filed Dec. 2,7. 1952 JOSEPH, H. @ETT/6 am HLLE/V 0.6157776.

June 19, 1334 J'. H. G51-'nca` r-:r AL' 1,963,620

I HoNING APPARATUS Filed Dec.. 27,-1952 sheets-'sheet 2 [mamans: JOSEPH H. @ETT/6 amL D,6J/ 45N D 67357-776?.

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Patented June 19, 1934 PATENT ori-ICE HONING APPARATUS Joseph Gettig and Allen D. Gettig, E llwood City,.Pa., assignors to National Tube Company, a corporation of New Jersey Application December 27, 1932, Serial No. 649,072

' s claims. (c1. 5119i This invention relatesto improvements in honing apparatus, and more particularly to apparatus for honing the interior of tubular workpieces.

One object of the invention is the provision of novel apparatus for completely and thoroughly grinding or polishing the entire length of the interior of tubular work-pieces in a single operation.

Another object is to provide a novell internal and radially expanding rotary hone Which, due

to its flexibility, will make complete contact with.

the entire, interior surface of a tubular workpiece that may not be perfectly straight.

A further object of the invention is the pro'- vision of a novel Work-piece carriage and associated mechanism for reciprocating the same.

These and further objects will appear after referring to the drawings, in which:

Figure 1 isa side elevation of the apparatus of the invention, showing the work-piece partly in section.

Figure 2 is a plan view of the apparatus of Figure 1.

Figure 3 is an end view taken along the line III- 111 of Figure 1.

Figures 4, 5, 6, 7, 8, 9 and 10 are detail views of the improved hone of the invention.

Referring more particularly to the drawings, the numeral 2 indicates a web and 3 the flanges forming the bed for the machine of the invention. A spindle housing 5 is moiuited on a support 4 which is secured to the spindle and has rotatively associated therewith a spindle 6. 'Ihe spindle 6 is provided at one of -its ends with a pulley 7 and at the other end with a coupling 6c. The pulley 7 receives movement from a belt 8 which-is driven from a larger pulley 9 which is, in turn, driven by a motor 10 supported upon a motor bed 11.

The Work-piece carriage of the invention comprises a pair of vertical supports 12, provided with wheels 13, which are/arrangedfor longitudinal movement on the flanges 3 of thebed. The supports 12 are provided with clamping segments 14 and a Wheel 15 for clamping a tubular work-piece 18 therebetween. 'Ihe supports 12 are yattached in spaced relationship by a pair of tubes 16 having internal rods 17 extending through the vertical supports 12 and provided at their ends v*with threads for the nuts 17a. The carriage formed by the vertical supports 12 is provided at each of its ends with a block 19 having grooved portions 19"s and a cooperating block 20 having similarly grooved portions 20. The block 20 is provided with a bolt 21 which extends through the block 19 and on which there is provided a hand-wheel 22 for clamping reciprocating rods 23. The rods 23 are journaled in suitable bearings 4a in the spindle housing support 4 and are provided at one of their ends with a coupling 23a.

A drive gear housing 24 ispositioned adjacent the spindle housing support 4 and is provided with a shaft 25 and'disks 26 having oiset pins 27. Connecting rods 28 are secured to the pins 27 on the disks 26 and to the couplings 23a by means of pins 23h. Rotative movement is given the'shaft 25 by means of a motor 28EL and associated power coupling mechanism 29.

Referring to Figures 4, 5, 6, '7, 8, 9 and 10, there is disclosed an improved centrifugally actuated expanding internal rotary hone which comprises a tubular portion A provided with a hole 6b for accommodating a rod 6a which is se cured to the rotary spindle 6 by means of the coupling 6v. The tube A is provided with radially disposed longitudinal flanges B which extend beyond the ends of the tube A and which are made integral with the tube A by welding, brazing or other means. One of the metal anges B is provided with a grooved portion C to which abrasive media, such as sandpaper, etc., may be attached. Curved centrifugal weights D are disposed between the flanges B. y

Referring tovFig'ure 6, a coupling is shown fo operatively connecting a plurality of rotary hones, and comprises a tube E having a longitudinal hole 6b disposed therein, to accommodate thel rod 6a. The tube E is provided with integral segments F, forming openings G therebetween for receiving the extended flanges B of the hones.

Referring to Figure 8, the groove C in one of the radial anges is shown as comprising a ver- Referring to Figure 9, there is disclosed a mod- Referring to Figure 10, there is disclosed a further modification of paper securing .means which comprises a round slot L having a restricted opening M. The operation for securing the abrasive paper to this form of groove 1s similar serted into the groove until it assumes a round shape, and the wire K is inserted 4endwise into the central portion thereof.

While we have shown and 'described several specic embodiments of our invention it will be understood that we do not wish to be limited exactly thereto, since various modications may be made without departing from the scope of our invention, as dened in the following claims.

We claim:

1. In a honing apparatus for tubular workpieces, a honing spindle comprising a tubular body, a plurality of radially disposed longitudinal flanges integral with said tubular body, segments rdisposed entirely between lsaid anges, and abrasive media associated with said segments and said flanges.

2. In a honing apparatus for tubular workpieces, a honing spindle comprising a tubular 1,963,620 ,to that forrigure a in that the paper, H is mbody, a plurality of radially disposed longitudinal anges integral with said body, centrifugally movable segments disposed between said anges, abrasive media for said segments and said anges, and means associated with at least one of said anges for holding Lsaid media.

3. In a honing apparatus for tubular workpieces, a honing spindle comprising a plurality of tubular bodies, a plurality of radially disposed -longitudinal anges connected to and extending lil@ 

